光电探测器
材料科学
光电流
响应度
光电子学
半导体
等离子体子
单晶
金属
Crystal(编程语言)
表面等离子体子
纳米颗粒
晶界
纳米技术
结晶学
化学
冶金
微观结构
程序设计语言
计算机科学
作者
Ziqi Zhang,Kang Chen,Wei Xia,Zhiyuan Zuo
标识
DOI:10.1088/2053-1591/abd0a6
摘要
Abstract Hybrid organic-inorganic lead halide perovskites (HOIPs) have appealed to researchers on account of excellent optoelectronic properties. Compared with films which possess grain boundaries, HOIPs single crystals with fewer defects behave excellent transport and recombination performances. In the family of HOIPs, single crystals of MAPbX 3 (MA = CH 3 NH 3 + , X = Cl, Br or I) are recognized as the most competitive candidates for optoelectronic applications. However, the photodetectors based on MAPbX 3 have difficulties in detecting weak signals for lacking of gains without structure optimizations and extra energy transfer channels. In this study, taking advantage of MAPbBr 3 single crystal (100) facets, planar metal-semiconductor-metal (MSM) photodetectors were fabricated with Au zigzag electrodes and modified Au nanoparticles (NPs) to realize localized Au surface plasmons (SPs). Compared to device without Au NPs, 2 times enhancement of photocurrent and responsivity have been achieved under 630 nm photon irradiation and 5 V bias. Furthermore, the surface metal structures can inhibit ionic migration to a certain extent. Potential mechanisms of the enhancements and suppressions are discussed in details to reveal the applications of this technique.
科研通智能强力驱动
Strongly Powered by AbleSci AI